Katey Sagal: 'Sons of Anarchy will splinter'

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Sons of Anarchy star Katey Sagal has hinted that the Sons will "splinter" in the upcoming fourth season.

The actress told Entertainment Weekly that future episodes will focus on the "internal struggle' of gang leader Clay (Ron Perlman).

Sagal explained: "When you're in a motorcycle club, basically, if you can't ride anymore, you can't be the president of the club, and Clay's arthritis is really, really bad. He's seeing his days are numbered.

"These are people who live off the grid. They don't have retirement funds [and] he's realising he's gong to have to come up with a bigger plan."

Sagal also revealed that her character, Clay's wife Gemma, will be in "a pretty good place".

"She has a new grandchild, her guys are coming back [and] there's been an influx of income," she explained. "So [Clay and Gemma] are a little bit more stable financially."

However, Sagal hinted that "internal combustion" within the Sons club will soon begin to threaten the pair's newfound stability.

"We learn a little more about the history of John Teller from the letters that have followed us from Ireland," she said. "Once again [Gemma] is thrown into chaos."

Sons of Anarchy will return with a 90-minute premiere on September 6 on FX.